Tetra-unsaturated sesterterpenoids (Haslenes) from Haslea ostrearia and related species
作者： W Guy Allard , Simon T Belt , Guillaume Massé , Raoul Naumann , Jean-Michel Robert
DOI: 10.1016/S0031-9422(00)00429-5
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摘要: The structures and distributions of C25 highly branched isoprenoid (HBI) alkenes (Haslenes) have been determined following isolation from cultures the diatoms Haslea ostrearia, crucigera, pseudostrearia saltstonica. HBIs change between species also different same species. Large scale culturing H. ostrearia has enabled three new tetra-unsaturated to be by NMR spectroscopy. structural relationships Haslenes together with potential significance biosynthesis genus is discussed.
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